An International Guide to
Patent Case Management for Judges

Authors: Justice Annabelle Bennett AC SC, Justice Stephen Burley, Cynthia Cochrane SC, Andrew Fox SC, Julian Cooke SC, David Larish, Benjamin Mee, Robert Clark, Samuel Hallahan, Anna Spies, Angela McDonald, Edward Thompson, Joseph Elks, Anna Elizabeth, Sue Gilchrist, John Lee, Irini Lantis, Timothy Gollan and Byron Turner

2.1 Overview of the patent system

2.1.1 Evolution of the patent system

The Australian patent system is governed by the Patents Act 1990 (Cth). The origins of that Act, and the Australian patent system generally, can be traced back to English law and the Statute of Monopolies 1623. 1

Section 6 of the Statute of Monopolies 1623 (which is expressly referred to in Section 18(1)(a) of the Patents Act 1990 (Cth)) provided an exception for patents to the general position that monopolies were contrary to law. Section 6 described the carve-out for patentable inventions in the following terms:

Provided alsoe That any Declaracion before mencioned shall not extend to any tres Patents and Graunt of Privilege for the tearme of fowerteene yeares or under, hereafter to be made of the sole working or makinge of any manner of new Manufactures within this Realme, to the true and first Inventor and Inventors of such Manufactures, which others at the tyme of makinge such tres Patents and Graunts shall not use, soe as alsoe they be not contrary to the Lawe nor mischievous to the State, by raisinge prices of Commodities at home, or hurt of Trade, or generallie inconvenient.

In broad terms, the Statute of Monopolies restricted the grant of patents to “any manner of new Manufactures” to the true and first inventor and imposed a limited term of 14 years for the grant of letters patent. By the early 1600s, the grant of letters patent and other privileges by the Crown had become controversial: they were being used merely as a convenient way for the Crown to raise revenue and were being granted in respect of products and processes that were already being used in the public domain, thereby harming trade and commerce. 2 The Statute of Monopolies sought to address these concerns by, among other things, limiting the grant of letters patent to particular subject matter (namely, any manner of new manufacture) and restricting the grant to a limited term. Following the passing of the Statute of Monopolies, the patent system in England continued to develop, eventually leading to the enactment of the Patents, Designs and Trade Marks Act 1883 (U.K.), which is the basis of the modern patent system in the United Kingdom and in Commonwealth countries.

Prior to Federation in 1901, each Australian colony had its own Patents Act that was modeled on the Patents, Designs and Trade Marks Act 1883 (U.K.). These Acts continued in force until the Australian Parliament enacted the Patents Act 1903 (Cth) pursuant to its legislative powers under Section 51(xviii) of the Commonwealth Constitution. The Patents Act 1903 (Cth) was replaced by Patents Act 1952 (Cth), which was in turn replaced by the Patents Act 1990 (Cth). The Patents Act 1990 (Cth), together with the Patents Regulations 1991 (Cth), came into operation on May 1, 1991.

The Patents Act 1990 (Cth) provides protection for two types of patents in Australia: the “standard” patent and the “innovation” patent. The main difference is that “innovation” patents have a shorter term of eight years and involve the lower threshold of an “innovative” step when compared to the prior art basis (as opposed to the “inventive step” required for standard patents).

The Patents Act 1990 (Cth) has undergone amendment several times since its enactment, including the reforms introduced by the Intellectual Property Laws Amendment (Raising the Bar) Act 2012 (Cth). These reforms apply largely in relation to patents requested for examination after April 15, 2013, and are designed to raise patentability thresholds to align more closely with the laws of overseas jurisdictions. More recently, the Australian Government passed the Intellectual Property Laws Amendment (Productivity Commission Response Part 1 and Other Measures) Act 2018 (Cth). These reforms involved, among other things, the introduction of an objects clause into the Patents Act 1990 (Cth), the phasing out of Australia’s “innovation” patent system 3 and amendments to the compulsory licensing scheme in Chapter 12 of the Patents Act 1990 (Cth).

Australia is also signatory to a number of international treaties relating to patent rights, including the Paris Convention for the Protection of Industrial Property, 4 the Patent Cooperation Treaty, 5 the Agreement on Trade-Related Aspects of Intellectual Property Rights 6 and various free trade agreements. Australia’s obligations under these treaties in relation to patent rights are reflected in the Patents Act 1990 (Cth).

Patent disputes are determined under the Patents Act 1990 (Cth) as interpreted by the case law that has developed under it, and its predecessor Acts. The development of modern Australian patent law has most closely followed that of the law of the United Kingdom, although there has been a measure of divergence from that law since that country joined the European Patent Convention in 1977. Often, during the course of patent trials, the parties inform the court of developments in the United States, the United Kingdom and Europe.

2.1.2 Patent application trends

Figure 2.1 shows the total number of patent applications (direct and Patent Cooperation Treaty (PCT) national phase entry) filed in Australia from 2000 to 2021.

image

2.2 Patent institutions and administrative review proceedings

2.2.1 Patent institutions

The Australian patent system is administered by the Australian Patent Office 7 (which is responsible for the administrative aspects of the patent system, including filing, examination and pre-grant “opposition” proceedings) and the Federal Court of Australia. 8

As noted above, Australia has recently abolished its second-tier “innovation” patent system, and applications for innovation patents ceased on August 26, 2021. The Australian Patent Office also facilitates the registration of overseas patent applications in Australia through the Paris Convention and the Patent Cooperation Treaty.

The Federal Court has jurisdiction to hear patent infringement, invalidity, entitlement and related disputes, together with appeals from the Australian Patent Office. It has jurisdiction in a number of other areas of law, including commercial and corporations laws, administrative law, industrial law, federal crime, admiralty and taxation. The Federal Court is located in the capital city of each state and territory, has a specialized panel of judges for patent matters and has a dedicated practice note for intellectual property matters, including patent disputes. 9

2.2.2 Administrative review proceedings

2.2.2.1 Avenues of review

The Federal Court of Australia is the institution in which the validity of a patent may be challenged. Prior to grant, patents can be opposed in the Australian Patent Office. The available avenues for review of an invalidity determination depend upon the decision-maker, the type of decision and whether the determination was made pre-grant or post-grant.

The Intellectual Property Law Amendment (Raising the Bar) Act 2012 (Cth) made a number of amendments to the Patents Act 1990 (Cth), including the internal grounds of invalidity and examination and opposition procedures in the Patent Office. The present section refers to the law that applies following those changes. However, it is important to be aware that, depending on the date on which an application was filed, an examination was requested, or the application was accepted, it will be necessary to consider the provisions in the Patents Act 1990 (Cth) prior to the amendments.

2.2.2.1.1 Pre-grant – refusal of acceptance

Following examination of a patent, the Commissioner of Patents may refuse to accept a request for a standard patent or specification. 10 The grounds of refusal for invalidity include a failure to comply with the internal requirements for invalidity (including sufficiency, best method and support) and that the invention is not a patentable invention (it is not a manner of manufacture, lacks utility, is not novel or does not involve an inventive step).

The decision of the Commissioner to refuse to accept a patent request or specification may be appealed to the Federal Court of Australia. 11

An examiner will issue reports if they reasonably believe that there are grounds of objection to a patent, and an applicant will be provided with opportunities to respond to and overcome the objections until the deadline for acceptance. In practice, most patents lapse rather than being formally refused.

2.2.2.1.2 Pre-grant – opposition

Once acceptance of a standard patent has been advertised, the grant of the patent may be opposed by any person. The notice of opposition must be filed within three months from the date acceptance is published. 12 The grounds on which the grant may be opposed include the internal requirements for invalidity and that the invention is not a patentable invention. 13

If the Commissioner of Patents is satisfied that a ground of opposition exists on the balance of probabilities, the Commissioner may refuse the patent application. 14 However, the Commissioner must first give the parties a reasonable opportunity to be heard and (where appropriate) allow the applicant an opportunity to amend the specification.

The decision of the Commissioner following an opposition may be appealed to the Federal Court of Australia by either the opponent or the applicant. 15

2.2.2.1.3 Pre-grant and post-grant – reexamination

The Commissioner of Patents may reexamine a standard patent if it has been accepted but not yet granted. The decision to reexamine pre-grant is at the discretion of the Commissioner but may occur, for example, following the identification of new prior art or the receipt of a notice from a third party. 16 Following grant, the Commissioner may reexamine a patent on their own initiative and must reexamine the patent if formally requested to do so by a third party in the approved form or following a direction from a court. 17 However, the Commissioner may not reexamine a patent if court proceedings are pending.

The Commissioner may refuse to grant the patent, or may revoke the patent, if the Commissioner makes an adverse report on reexamination (which includes on invalidity grounds) and is satisfied on the balance of probabilities that there is a lawful ground of objection to the specification. 18 However, the Commissioner must first provide the applicant or patentee an opportunity to respond to the report and be heard and (where appropriate) allow the applicant an opportunity to amend the specification.

The decision of the Commissioner to refuse an application or to revoke the patent following reexamination may be appealed by an applicant to the Federal Court of Australia. 19

A third party that has requested reexamination has no right of appeal of the decision of the Commissioner to the Federal Court. However, the third party may apply to the court for revocation of the patent or may seek judicial review, as discussed in Sections 2.2.2.4 and 2.2.2.5.

2.2.2.2 Claim construction

Allowing for the differences in procedure between them, the process for and the procedures governing claim construction in the Australian Patent Office are generally the same as in the Federal Court of Australia. In particular:

However, the Australian Patent Office only construes a claim in the context of a determination of validity or in claim amendment, not infringement (for a further discussion on claim construction with respect to infringement, see Section 2.5.1).

2.2.2.3 Role of experts
2.2.2.3.1 Australian Patent Office (IP Australia)

Expert evidence may be filed in the Australian Patent Office in the following invalidity proceedings:

Generally, expert evidence is given by way of declaration under the Patents Regulations. 23 While the Patent Office has the power to require witnesses (including expert witnesses) to give oral evidence at a hearing, such evidence is, in practice, rarely required. 24 The rules of evidence do not apply in the Patent Office. However, greater weight is likely to be given to expert evidence that complies with the rules of evidence on admissibility.

Expert evidence in the Australian Patent Office is generally directed to the following topics:

2.2.2.3.2 Claim construction and prior art

While claim construction is ultimately a matter for the Patent Office, the claims are read through the eyes of the skilled addressee in light of the specification as a whole and the CGK before the priority date. 25 Expert evidence can assist the Patent Office in placing itself in the position of a person acquainted with the surrounding circumstances as to the state of the art at the time. 26 Expert evidence is particularly important where the words used in a patent claim or prior art document have a technical or special meaning in the relevant field. 27

2.2.2.3.3 Common general knowledge

The state of the relevant CGK for a patent or pending application is established by evidence from experts in the technical field concerning the extent to which certain information was known and accepted by others in the field. 28

2.2.2.3.4 Obviousness

An opinion from an expert as to whether an invention is obvious is unlikely to be helpful. This is because questions of obviousness and inventive step are ultimately for the court or Patent Office to determine, irrespective of the opinion expressed by any number of experts. 29

However, where obviousness is sought to be established, it is common for parties to set a design task for an expert representing the person skilled in the art. For example, an expert may be asked to solve the problem identified in the patent or pending application using only information that was CGK at the priority date.

2.2.2.3.5 Hindsight

When briefing an expert to provide evidence in relation to obviousness or inventive step, care must be taken to ensure that the evidence is not tainted by hindsight, either as a result of the witness applying hindsight or from the instructions given to the witness. Accordingly, where obviousness evidence is required, it is generally prudent for those taking the evidence to proceed in the following manner:

  1. 1. Prior to providing the expert with the patent specification or any prior art documents, take the witness’s evidence of the CGK at the relevant date. It is important to use nonleading questions when taking this evidence.
  2. 2. If undertaking a design task, this evidence should be based on the CGK evidence given by the witness in the preceding step and any prior art information (document or act) that may permissibly supplement the CGK pursuant to Section 7(3) of the Patents Act 1990 (Cth).
  3. 3. Only after obtaining the evidence in Steps 1 and 2 should the expert be given a copy of the patent-in-suit for the purposes of construction and comparison with the prior art.
2.2.2.4 Appeals to the Federal Court of Australia, Full Court of the Federal Court and High Court of Australia

An appeal from a decision of the Commissioner of Patents (including to refuse acceptance or revoke grant) lies to a single judge of the Federal Court of Australia. 30 A party may appeal this decision of a single judge to the Full Court of the Federal Court only with leave.

An appeal from a decision of a state or territory supreme court lies to the Full Court Federal Court.

The question of whether leave to appeal to the Full Court should be granted may be decided by a single judge or may be referred to the Full Court. The grant of leave to appeal is discretionary, and relevant factors may include whether the decision is attended with sufficient doubt, whether substantial injustice will result from a refusal to grant leave and whether the appeal involves a question of public importance or of pure law. Where a party has unsuccessfully opposed the grant of a patent twice, there is limited scope for a further appeal. 31 Conversely, the grant of leave to appeal is more likely where the grant of a patent has been refused, as this would be determinative of the patentee’s rights. 32

An appeal from a first-instance court decision on invalidity (such as an application for revocation) lies to the Full Court of the Federal Court. 33 Leave to appeal is not required for a final decision on invalidity.

A party may seek special leave to appeal to the High Court of Australia from a decision of the Full Court. However, the grant of special leave to appeal such a decision is rare.

2.2.2.5 Judicial review and review by the Administrative Appeals Tribunal

The Patent Office is an administrative decision-maker. A person aggrieved by a decision of the Commissioner of Patents that is of an administrative character may therefore seek judicial review in the Federal Court or Federal Circuit Court. The nature of a judicial review is more limited than an appeal and focuses not on the merits of the decision but on the legality of the decision and the processes followed. Grounds of judicial review include that the decision involved a breach of the rules of natural justice, a failure to observe required procedures, the absence of jurisdiction or authority, an improper exercise of power, an error of law or that it was induced or affected by fraud. 34

An affected person may also seek a merits review of certain specified decisions of the Commissioner in the Administrative Appeals Tribunal. 35 However, this does not include the final decisions of the Commissioner on invalidity that have been discussed in this section.

2.2.2.6 Nature of appeal from an invalidity decision of the Commissioner of Patents

An appeal from a decision of the Commissioner of Patents to the Federal Court of Australia must be filed within 21 days of the date of the decision unless an extension of time is granted. 36 The Commissioner is entitled to appear and be heard in any appeal against a decision of the Commissioner. 37 However, the Commissioner is not automatically a party to any appeal unless there is no other party opposing the appeal. 38

An appeal to the Federal Court from a decision of the Commissioner is not an “appeal” in the strict sense – it is in the Federal Court’s original jurisdiction and conducted as a hearing de novo. 39 This means that the court stands in the shoes of the Commissioner and makes the decision afresh. The court is not confined by the arguments or evidence that were before the Commissioner, including the grounds of invalidity. The court may receive fresh evidence and direct that the proceeding be conducted as it thinks fit. 40 Evidence that was before the Commissioner may be admitted with leave 41 but must also comply with the general rules of evidence.

The Federal Court may affirm, vary or reverse the decision of the Commissioner and may give any judgment or make any order that, in all the circumstances, it thinks fit. 42 While the Federal Court is generally confined to the subject matter of the controversy that was before the Commissioner, the court also has the power to direct the amendment of a patent application on an appeal. 43

2.2.2.7 Innovation patents

This section has focused on the avenues for review of decisions relating to the validity of standard patents. Key differences in relation to the review of invalidity decisions relating to an innovation patent, by contrast, are that an innovation patent is examined only after grant and reexamined or opposed only after certification. Following examination, reexamination or opposition, the Commissioner of Patents may decide to revoke the grant of an innovation patent, including on invalidity grounds. 44 An appeal lies to the Federal Court of Australia in relation to a decision to revoke an innovation patent. Innovation patents are being phased out, with the last date for filing an application having been August 25, 2021.

2.3 Judicial institutions

2.3.1 Judicial administration structure

2.3.1.1 National judicial structure

Almost all patent infringement and revocation proceedings are heard in the Federal Court of Australia. As a matter of theory, state and territory supreme courts also have jurisdiction to hear such proceedings, although this rarely occurs. Appeals from decisions of the Commissioner of Patents, who is responsible for granting patents under the Patents Act 1990 (Cth), are heard by the Federal Court. All appeals from first-instance infringement and revocation decisions, or from Federal Court decisions made with respect to decisions of the Commissioner, must be heard by the Full Court of the Federal Court.

The Federal Court is composed of a Chief Justice and judges who are appointed from time to time. It is a national court with registries located in each capital city and operates under a policy known as the National Courts Framework. A key feature of the National Courts Framework is the organization of matters filed in the court into national practice areas (NPAs) and subareas. One of the NPAs is Intellectual Property, which has a subarea dedicated to disputes relating to patents and associated statutes. Presently, there are 15 judges who are allocated to the Patents and Associated Statutes subarea of the Intellectual Property NPA. Many of these judges have extensive experience in the conduct of patent trials, as a result either of their work in practice before being appointed to the court or since their appointment. As a general rule, once a case is allocated to a particular judge, that judge retains that case in their docket through the case management, to hearing and judgment.

Individual judges are principally situated in their local registry; however, they are able to hear matters filed in different state or territory registries. Each registry is staffed by registrars and support staff, including lawyers, senior coordinators, client service officers and court officers. In addition to providing operational support to the judges in each state, registrars perform statutory functions assigned to them by the Federal Court of Australia Act 1976 (Cth) and the Federal Court Rules 2011 (Cth). These registrars often have expertise in intellectual property matters, including patents, and provide assistance to judges during the interlocutory phases of case preparation. Where the parties to a patent dispute agree to a mediation being facilitated by a registrar, a registrar with experience in patent cases will frequently be allocated. In addition, registrars will often provide assistance in the preparation of the joint expert report by facilitating the meeting of the experts. Furthermore, disputes relating to the production of documents or costs and other such matters may be delegated to registrars for adjudication. The registries also provide registry services to legal practitioners and members of the public, including by providing information regarding the practices and procedures of the court.

Individual judges of the Federal Court sit at first instance and also as appellate judges. Appeals from decisions of a single judge of the Federal Court, or from decisions of state or territory supreme courts, are heard by the Full Court of the Federal Court, the appellate division of the Federal Court. The Full Court is typically composed of three judges of the Federal Court who are selected for each appeal. Where an appeal is challenging the correctness of a previous decision of the Full Court, an expanded bench of five judges may be constituted.

Appeals from the Full Court of the Federal Court are heard by the High Court of Australia. The High Court is a separate court composed of a Chief Justice and six judges. In order to have an appeal heard by the High Court, parties are required to make an application for special leave to appeal. Special leave applications are determined on the papers or at short contested hearings usually heard by one or two judges of the High Court. If special leave to appeal is granted, the matter will be heard and determined by the Full Court of the High Court, which will usually be composed of between three and seven judges. There is no avenue of appeal beyond the High Court.

Figure 2.2 shows the judicial administration structure in Australia.

image

2.3.1.2 Selection process

Judges of the Federal Court of Australia are appointed by the Governor-General of the Commonwealth of Australia by commission. Judges are appointed from the ranks of qualified legal practitioners of significant standing in the legal community. They are most typically appointed from the ranks of barristers or, less frequently, solicitors, who have practiced law for decades before being appointed. All Federal Court judges must retire at the age of 70 years.

Judges of the Federal Court exercise the judicial power of the Commonwealth and are independent from Parliament and the executive branches of the government. As the Federal Court is a court created by Parliament under Chapter III of the Constitution, judges may not be removed from office except by the Governor-General on an address from both houses of Parliament in the same session on the ground of proven misbehavior or incapacity.

2.3.2 Judicial education on intellectual property

The Intellectual Property NPA is coordinated by a select group of national coordinating judges who have expertise in intellectual property law. These national coordinating judges are responsible for the operation and administration of the Intellectual Property NPA, including the Patents and Associated Statutes sub-area. This involves, among other things, overseeing the ongoing development of a program of education for judges and the profession.

2.4 Patent invalidity

In addition to its jurisdiction to review determinations of the Patent Office as to invalidity in relation to patent applications (see Section 2.2.2.4), the Federal Court is frequently asked to adjudicate allegations of invalidity in the context of proceedings seeking revocation of a granted patent or where invalidity is raised as a defense in infringement proceedings brought by the patentee or its exclusive licensee.

When patent invalidity cases are filed, they are allocated to judges in the registry of filing who are within the Patents and Associated Statutes subarea of the Intellectual Property NPA. This allocation principle is subject to:

Typically, complex patent matters, such as those involving pharmaceuticals or other complex scientific subject matter, are allocated to judges with significant experience in the field. As noted above in Section 2.3.1.1, and below in Section 2.6, the individual docket system means that, once a matter has been allocated to a judge, it is intended that the case will remain with that judge for case management and disposition.

If infringement proceedings are already in progress when proceedings alleging the invalidity of the same patent are commenced (either by cross-claim or otherwise), the invalidity proceedings will most likely be allocated to the docket of the judge hearing the infringement proceedings and the matters heard together, as in a single proceeding.

2.4.1 Process

Proceedings seeking revocation of a patent for invalidity are usually commenced by pleadings. The applicant will typically commence proceedings by filing an originating application and statement of claim. The originating application will set out the nature of the orders being sought in the proceedings (e.g., a declaration that particular claims of a patent are invalid). The statement of claim will provide further detail about the invalidity challenge, including the grounds upon which it is alleged that the patent is invalid. In addition, the applicant must also provide particulars of invalidity setting out with more precision the basis upon which each of the grounds of invalidity is said to be established.

In response, the respondent patentee will file a defense to the statement of claim. In its defense, the respondent will either admit, deny or otherwise provide an explanation in response to the allegations contained in the statement of claim. The applicant will then be able to file a reply to the defense or, failing this, be taken to join issue and deny the allegations made in the defense.

Once the pleadings have been finalized and closed, it is typical for the preparation of evidence in the proceedings to be commenced. This topic is discussed in Section 2.6.7.

2.4.2 Role of experts – Federal Court of Australia (invalidity proceedings)

Expert evidence in patent litigation in the Federal Court of Australia is almost exclusively given on affidavit and by way of joint report. Expert evidence is expected to comply with the requirements set out in the applicable practice note (at the time of writing, the Expert Evidence Practice Note (GPN-EXPT), dated October 25, 2016) as well as the relevant rules of court. 45 These requirements place particular focus on the importance of the expert’s independence as well as matters going to admissibility and the manner in which experts’ evidence will be prepared and presented at trial. The practice note specifically requires every expert witness to read the Harmonised Expert Witness Code of Conduct 46 and agree to be bound by it. Unlike in the Patent Office, the rules of evidence apply in Federal Court proceedings.

Where an allegation of invalidity is raised in answer to an application for preliminary injunctive relief, expert evidence bearing on questions of construction of the specification or the contents of prior art documents will usually be given on affidavit. Cross-examination is rare in interlocutory applications of this kind.

In the case of invalidity evidence to be received at trial, the following procedural matters should be noted:

Expert evidence relating to invalidity will generally pertain to the same issues discussed at Section 2.2.2.3 in relation to Patent Office proceedings (in particular, evidence assisting the court in understanding the patent specification, the prior art, the state of knowledge – including CGK – in the relevant field at the priority date). In cases relating to older patents, there may be expert evidence establishing that a particular document would have been ascertained and regarded as relevant to a particular technical problem by the skilled addressee.

2.5 Patent infringement

2.5.1 Claim construction

This section focuses on claim construction in the Federal Court of Australia, given that patent matters are primarily conducted in that jurisdiction.

2.5.1.1 The role of claim construction

The proper construction of a patent is a question of law. The construction of the patent in question is important to most issues in patent disputes and can often be determinative of them. In particular, the proper construction of a patent may: